diff --git a/snapshot/overlayfs.go b/snapshot/overlayfs.go
index e5358f8..e82b573 100644
--- a/snapshot/overlayfs.go
+++ b/snapshot/overlayfs.go
@@ -51,7 +51,7 @@ func (o *Overlayfs) Prepare(key string, parentName string) ([]containerd.Mount,
 	return active.mounts(o.cache)
 }
 
-func (o *Overlayfs) Commit(key string, name string) error {
+func (o *Overlayfs) Commit(name, key string) error {
 	active := o.getActive(key)
 	return active.commit(name)
 }
diff --git a/snapshot/overlayfs_test.go b/snapshot/overlayfs_test.go
index ecbef33..ebc4aa4 100644
--- a/snapshot/overlayfs_test.go
+++ b/snapshot/overlayfs_test.go
@@ -67,7 +67,7 @@ func TestOverlayfsCommit(t *testing.T) {
 		t.Error(err)
 		return
 	}
-	if err := o.Commit(key, "base"); err != nil {
+	if err := o.Commit("base", key); err != nil {
 		t.Error(err)
 		return
 	}
@@ -90,7 +90,7 @@ func TestOverlayfsOverlayMount(t *testing.T) {
 		t.Error(err)
 		return
 	}
-	if err := o.Commit(key, "base"); err != nil {
+	if err := o.Commit("base", key); err != nil {
 		t.Error(err)
 		return
 	}
@@ -150,7 +150,7 @@ func TestOverlayfsOverlayRead(t *testing.T) {
 		t.Error(err)
 		return
 	}
-	if err := o.Commit(key, "base"); err != nil {
+	if err := o.Commit("base", key); err != nil {
 		t.Error(err)
 		return
 	}